kilogram

Post by **Jonathan** » Fri Jun 15, 2007 6:38 pm

http://www.theage.com.au/news/national/ ... 66901.html

Kilogram to be defined in terms of atom count of a perfect sphere of silicon.

quantus · Post by **quantus** » Fri Jun 15, 2007 9:58 pm

This is only gonna get replaced by a carbon crystal sphere at some point when the diamond growing processes are more mature.

Post by **Jonathan** » Fri Jun 15, 2007 10:37 pm

No, the idea is once you've counted the number of atoms you can count the same number of atoms any damn way you want to, eliminating the need for a physical object. Right now the kilogram is based on a some standard weight they made in 1890.

http://en.wikipedia.org/wiki/Kilogram#History

Post by **Jonathan** » Fri Jun 15, 2007 10:37 pm

No, 1889. Pwned.